| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-26801: Bluetooth: Avoid potential use-after-free in hci_error_reset |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Bluetooth: Avoid potential use-after-free in hci_error_reset |
| |
| While handling the HCI_EV_HARDWARE_ERROR event, if the underlying |
| BT controller is not responding, the GPIO reset mechanism would |
| free the hci_dev and lead to a use-after-free in hci_error_reset. |
| |
| Here's the call trace observed on a ChromeOS device with Intel AX201: |
| queue_work_on+0x3e/0x6c |
| __hci_cmd_sync_sk+0x2ee/0x4c0 [bluetooth <HASH:3b4a6>] |
| ? init_wait_entry+0x31/0x31 |
| __hci_cmd_sync+0x16/0x20 [bluetooth <HASH:3b4a 6>] |
| hci_error_reset+0x4f/0xa4 [bluetooth <HASH:3b4a 6>] |
| process_one_work+0x1d8/0x33f |
| worker_thread+0x21b/0x373 |
| kthread+0x13a/0x152 |
| ? pr_cont_work+0x54/0x54 |
| ? kthread_blkcg+0x31/0x31 |
| ret_from_fork+0x1f/0x30 |
| |
| This patch holds the reference count on the hci_dev while processing |
| a HCI_EV_HARDWARE_ERROR event to avoid potential crash. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26801 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 4.19.309 with commit e0b278650f07acf2e0932149183458468a731c03 |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 5.4.271 with commit 98fb98fd37e42fd4ce13ff657ea64503e24b6090 |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 5.10.212 with commit 6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2 |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 5.15.151 with commit da4569d450b193e39e87119fd316c0291b585d14 |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 6.1.81 with commit 45085686b9559bfbe3a4f41d3d695a520668f5e1 |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 6.6.21 with commit 2ab9a19d896f5a0dd386e1f001c5309bc35f433b |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 6.7.9 with commit dd594cdc24f2e48dab441732e6dfcafd6b0711d1 |
| Issue introduced in 4.0 with commit c7741d16a57cbf97eebe53f27e8216b1ff20e20c and fixed in 6.8 with commit 2449007d3f73b2842c9734f45f0aadb522daf592 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-26801 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| net/bluetooth/hci_core.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/e0b278650f07acf2e0932149183458468a731c03 |
| https://git.kernel.org/stable/c/98fb98fd37e42fd4ce13ff657ea64503e24b6090 |
| https://git.kernel.org/stable/c/6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2 |
| https://git.kernel.org/stable/c/da4569d450b193e39e87119fd316c0291b585d14 |
| https://git.kernel.org/stable/c/45085686b9559bfbe3a4f41d3d695a520668f5e1 |
| https://git.kernel.org/stable/c/2ab9a19d896f5a0dd386e1f001c5309bc35f433b |
| https://git.kernel.org/stable/c/dd594cdc24f2e48dab441732e6dfcafd6b0711d1 |
| https://git.kernel.org/stable/c/2449007d3f73b2842c9734f45f0aadb522daf592 |
